Williams Sound PPA T45NET Manuale utente

PPA T45NET / PPA T45

Personal PA®DSP FM Wideband Transmitter

USER Manual

Transmitter Models PPA T45NET and PPA T45

Optional Receiver Models PPA R38, PPA R37, PPA R35-8, PPA R1600

MAN 176C

PRINTED IN THE U.S.A.

Personal PA®DSP FM Wideband Transmitter

Table of Contents

System Connection Overview 6

Figure 1: Typical System Example 6

Wiring and Connections 7

Power Supply Connection 7

Ethernet Connection 7

Audio Source Connections 7

Figure 2: PPA T45NET Rear View 7

Multi–Channel Sources 8

Selecting an Audio source Appropriate for Hearing Impaired Listeners 8

Figure 3: Audio Source Connectors 8

Avoiding Hum in the Audio (as a Result of a Ground Loop) 9

Figure 4: Connecting to a Balance/Unbalanced Line 9

Installing the ANT 025 Whip Antenna 9

Figure 5: Installing the ANT 025 Antenna (rear view) 9

Connecting the T45 to other Devices 10

Figure 6: T45 Typical Connections 10

Controls & Features 11

Figure 7: PPA T45 Front View 11

Power Button 11

OLED Display 11

Audio Input Level Indicator 11

Input Overload Indication 11

RF Indicator (On Air) 11

Hot Buttons / Menu Controls 11

Headphone Jack 12

Main Info Screen and Screen Navigation 12

Lock/Unlock Settings 12

Figure 8: Main Info Screen 12

Figure 9: Navigating the Menu 12

Quick Setup Instructions 13

Front Screen Menu Tree (Quick Reference) 14

Figure 10: Front-screen Menu Tree 14

Figure 11: Front-screen Menu Tree (continued) 15

Figure 12: Front-screen Menu Tree (continued) 16

Front Screen Menu Tree (Detailed Instructions) 16

1. AUDIO SETTINGS 16

1a. Audio Presets 16

Figure 13: Audio Preset Conguration Table 16

High Pass Filter 17

Low Pass Filter 17

Personal PA®DSP FM Wideband Transmitter

Compression 17

1b. Audio Source 18

1c. Audio Input Gain 19

1d. Headphone Source 19

1e. Headphone Volume 19

2. RF SETTINGS 20

2a. Channel (or Frequency) 20

Figure 14: Channel/Frequency Selection Chart 20

2b. RF Output Power 20

2c. RF Time-Out 21

3. PREFERENCES 21

3a. Display Mode 21

3b. Channel Mode 22

3c. Screen Time-Out 22

3d. User-Entered Transmitter Description 22

3e. Restore Defaults 23

4. ADD-ON MODULE (PPA T45NET only) 24

4a. Status 24

4b. Network Settings 24

4c. Admin 25

Network Setup for Hard-wired Ethernet Devices (Laptop or Desktop PC) 26

Figure 15: Williams Sound Device Discoverer Tool (optional) 27

Network Setup for Wireless Devices (iPad, Android Tablet, or Smart Phone) 28

Figure 16: Williams Sound Device Discoverer Tool 28

Web Control Interface 30

Figure 17: Main Login Page and Ethernet Communication Status 30

Figure 18: Home Page 31

Figure 19: Audio Settings Page 32

Figure 20: RF Settings Page 33

Figure 21: Network Settings Page 34

Figure 22: Administration Page 34

Receiver Safety Information 35

Recycling Instructions 35

Wideband FM Receivers (Model Selection is Optional) 36

Receiver Model PPA R38 36

Figure 23: PPA R38 Controls and Display 36

Operating the receiver 36

Wideband FM Receivers (continued) 37

Receiver Model PPA R37 37

Personal PA®DSP FM Wideband Transmitter

Operating the PPA R37 Receiver 37

Figure 25: Battery and channel selections 37

Figure 24: PPA R37 controls 37

LED Flash Codes 37

Receiver Model PPA R35-8 38

Operating the PPA R35-8 Receiver 38

Connecting Earphones/Headphones 38

Battery Installation (All Receiver Models) 38

Figure 26: PPA R35-8 controls 38

Belt Clip Installation (All Receiver Models) 39

Earpad Cleaning for Earphones and Headphones 39

Figure 27: Belt Clip Installation and Removal 39

Suggestions For Receiver Management 40

Receiver Battery Information (All Receiver Models) 40

Battery Charger Information 40

Troubleshooting 41

The T45 “RF” (On Air) Indicator is not on 41

No Audio heard in Phones jack 41

Noise or Distortion in the Audio 41

Noise in audio “grows” when program is silent 41

Reception difculties 41

No Reception 41

Insufcient range, good reception near transmitter, poor at a distance 41

Users must turn receiver volume controls way up (to 4 or 5) to get enough volume 42

Users complain of too much noise during soft audio. Dynamic range of music reduced too greatly. 42

Buzz in other equipment when transmitter is on or off 42

Buzz or other noise in equipment only when transmitter is on 42

Remote Control is not working over the hardwired Ethernet network 43

Remote Control is not working over Wi-Fi 44

System Specications PPA T45, PPA T45NET Transmitters 45

System Specications PPA T45, PPA T45NET Transmitters (continued) 46

System Specications PPA R38 Receiver 47

System Specications PPA R35-8 Receiver 48

System Specications PPA R37 Receiver 49

Lifetime PLUS Limited Warranty 50

Personal PA®DSP FM Wideband Transmitter

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Personal PA®DSP FM Wideband Transmitter

LOUDSPEAKER

LINE-LEVEL

OUTPUT

SOUND SYSTEM/

AMPLIFIER MICROPHONE

PPA T45 TRANSMITTER

FM RECEIVERS

A408

ROUTER

IPAD, TABLET OR PHONE

WITH WI-FI

WI-FI

DESKTOP (OR LAPTOP) COMPUTER

(HARD-WIRED TO ROUTER)

LINE-LEVEL

INPUT

AUDIO/LISTENING SIDE CONTROL SIDE (PPA T45NET only)

ETHERNET (PPA T45NET only)

ETHERNET

System Connection Overview

The PPA T45 is an FM Wide-Band transmitter operating in the 72-76MHz bandwidth. Compatible Williams Sound receivers

include PPA R38, PPA R37, PPA R35-8 body packs and the PPA R1600 remote speaker.

Developed for hearing assistance in places of public access, the PPA T45 is designed for those who need help overcoming

background noise, reverberation, or distance from the sound source. It includes a complete audio processor optimized for the

needs of hearing impaired persons and is easily integrated with your existing sound system. The PPA T45 can also be used with a

microphone as a stand-alone system.

Your PPA T45 transmitter operates just like an FM radio station. The transmitter takes audio directly from a microphone or sound

system. This audio is then broadcast over an FM radio signal. FM radios can be worn by listeners or an AC powered amplied

speaker with built in receiver can be utilized as needed. The broadcast can be received up to 1000 ft from the transmitter *. This

allows listeners to sit anywhere in the area and listen to the broadcast at the volume level they need without disturbing others

around them.

Two models are available - one with Ethernet control (PPA T45NET) and one without Ethernet control (PPA T45). Ethernet control

allows the transmitter settings to be changed over a network with hard-wired or wireless devices (Figure 1).

*Range is dependent on the environment.

Figure 1: Typical System Example

Personal PA®DSP FM Wideband Transmitter

Wiring and Connections

24VDC 0.75A

williamssound.com

Line / Mic In

Analog

Audio

Digital

Audio

Line Out AES / EBU In S/PDIF In RF 75 Ω Ant Ethernet

bal

—

unbal

—

phantom

T45 Rear

A401

ANALOG

LINE/MIC INPUT

ACCEPTS BALANCED

OR UNBALANCED

1/4” PLUG or XLR

RCA LINE OUTPUT

FOR MONITORING

OR RECORDING

DIGITAL INPUT

ACCEPTS AES

OR EBU DIGITAL

AUDIO XLR PLUG

RCA DIGITAL AUDIO

INPUT FOR

COAXIAL/DIGITAL

AUDIO

RF OUTPUT

FOR REMOTE

ANTENNA

CONNECTION

ETHERNET JACK

WITH LINK AND

ACTIVITY LED’S

(PPA T45NET Only)

POWER SUPPLY

JACK

Power Supply Connection

Connect the TFP 048 power supply to the Power Supply Jack located on the rear of the PPA T45 transmitter (Figure 2).

Ethernet Connection

If connecting to a network, or connecting directly to a PC, a Standard or Crossover Ethernet cable may be used. The PPA

T45NET auto-senses the connection and congures itself for the Ethernet cable type being used.

Audio Source Connections

The T45 transmitter will accept the following audio sources:

1. Balanced Microphone on a 3-pin (XLR) connector without phantom power.

2. Balanced Microphone with 12 volt phantom power (DIN 45596) on a 3-pin (XLR) connector.

3. Balanced/Unbalanced microphone with or without phantom power on 1/4 inch (TRS) jack

4. Balanced/Unbalanced Line on a 3-pin (XLR) connector.

5. Balanced/Unbalanced Line on 1/4 inch (TRS) jack.

6. Digital Audio (AES/EBU) on a 3-pin (XLR) connector.

7. Digital Audio (S/PDIF) on an RCA jack.

WARNING:

The T45 is not designed to accept 70 volt speaker signals! This may result in damage to your system. The

sound source should come directly from the system mixer or digital source as a low-level or unprocessed

signal.

IMPORTANT: When a suitable audio source has been determined, you MUST congure the audio source in the menu

of the T45 before plugging that source in.

NOTE: FCC regulations, section 15.21, requires the user to comply with the rules of transmitter operation. Any

changes or modications made by the user not expressly approved for compliance may result in the loss of all

privileges and authority to operate the equipment.

Figure 2: PPA T45NET Rear View

Personal PA®DSP FM Wideband Transmitter

BALANCED LINE USING 1/4" CONNECTOR

IN PHASE

A106

UNBALANCED LINE USING 1/4" CONNECTOR

A107

4.7 K

SOURCE A

SOURCE B

CONNECTING TO A MULTI-CHANNEL OR STEREO SOURCE

A109

BALANCED LINE USING 3–PIN CONNECTOR

IN PHASE

1 2

3 PIN CONNECTOR

A108

IN PHASE

FROM MICROPHONE

1 2

3 PIN CONNECTOR

LOW IMPEDANCE MICROPHONE

A104

UNBALANCED LINE USING 3–PIN CONNECTOR

1 2

3 PIN CONNECTOR

A105

Figure 3: Audio Source Connectors

Multi–Channel Sources

By constructing a simple resistive mixer, stereo (or 3 channel) sources can be connected to the T45. Additional channels can be

accommodated by adding a resistor for each source. Necessary resistors can be obtained from Williams Sound (Part Number

RFC 472) or from any local electronics parts supplier. See Figure 3.

Selecting an Audio source Appropriate for Hearing Impaired Listeners

If the T45 is going to be used specically for the accommodation of hearing impaired listeners, we recommend following these

general guidelines:

The PPA T45 transmits audio with excellent delity. Therefore, the audio source signal should be of the highest audio quality and

not subject to a compressor, limiter, reverberation, or other signal processing equipment. The T45 has a very effective DSP audio

processor. If compression is desired in the audio, refer to the “Compression” section under “Audio Settings - 1a. Audio Presets”

for available settings. Excessive compression is not helpful to the hearing impaired and can contribute to excessive noise in the

receiver outputs.

The T45 audio source signal is usually connected to a mixer’s “line output” signal which is behind the mixer’s parametric equalizers

but ahead of any equalization used for house loudspeakers.

If audio delay is available for use in large auditoriums, it’s usually best to use it. Because radio signals travel faster than sound,

delaying the transmitted audio so that an average listener (in the middle of the listening area) hears the transmitted audio a few

milliseconds after audio from the main sound reinforcement system speaker is helpful. This will also help audience members who

lip read.

Personal PA®DSP FM Wideband Transmitter

Avoiding Hum in the Audio (as a Result of a Ground Loop)

A hum created by a ground loop can often be eliminated by connecting a capacitor in series with the audio line shield to the

transmitter’s ground. This method also maintains good RF shielding. Determining the effectiveness of this method for your

installation usually requires some experimentation. Necessary capacitors can be obtained from Williams Sound or from any

electronic parts supplier. See Figure 4.

Figure 4: Connecting to a Balance/Unbalanced Line

IN PHASE

1 2

3-PIN

CONNECTOR

BREAKING A GROUND LOOP WHEN

CONNECTING TO A UNBALANCED LINE

BREAKING A GROUND LOOP WHEN

CONNECTING TO A BALANCED LINE

.01 uF CERAMIC DISC

CAPACITOR .01 uF CERAMIC

DISC CAPACITOR

A110

Installing the ANT 025 Whip Antenna

Gently thread the ANT 025 onto the stud recessed in the hole on the top of the transmitter. See Figure 5.

Figure 5: Installing the ANT 025 Antenna (rear view)

ANT 025 ANTENNA

(INCLUDED)

REMOTE ANTENNA

COAXIAL JACK

FOR

75 Ohm ANTENNAS

(See note below)

A410

24VDC0.75A

williamssound.com

Line/ Mic In

Analog

Audio

Digital

Audio

LineOut AES / EBU In S/PDIF In RF 75 Ω Ant Ethernet

bal

—

unbal

—

phantom

NOTE: If the T45 is going to be rack mounted, you will not be able to install the ANT 025 whip antenna. For rack mounting,

consider installing a remote antenna like the ANT 005 or ANT 024 - these antennas require using the Remote Antenna

Coaxial Jack (above) and a long length of terminated coaxial cable. Another option is to mount the antenna on the

rack itself - consider the ANT 029 which includes a 1RU bracket and a 3ft terminated coaxial cable. For a full list of

antenna options, please go to our website www.williamssound.com and view the Antenna Application Guide under

“Products - Accessories - Antennas”.

Personal PA®DSP FM Wideband Transmitter

Figure 6: T45 Typical Connections

A407

24VDC 0.75A

williamssound.com

Line / Mic In

Analog

Audio

Digital

Audio

Line Out AES / EBU In S/PDIF I n RF 75 Ω Ant Ethernet

bal

—

unbal

—

phantom

ANALOG AUDIO

LINE OUT (RCA)

ANALOG

LINE/MIC INPUT

(XLR OR 1/4”)

BALANCED,

UNBALANCED,

OR PHANTOM.

DIGITAL

LINE

INPUT

(RCA)

REMOTE

ANTENNA

CONNECTION

(RG-6 QS,F-CONN)

PPA T45

ANALOG MIXER OR AUDIO SYSTEM

AUDIO LINE IN (RCA)

ROUTER

ANALOG LINE

OUTPUT

(1/4” or XLR)

DIGITAL

LINE

INPUT

(XLR)

AES or EBU.

PPA T45NET ONLY

DEVICE OR MIXER WITH S/PDIF OUTPUT

DIGITAL LINE OUT (RCA)

DIGITAL MIXER

REMOTE

ANTENNA

STANDARD CAT5 ETHERNET CABLE (RJ-45)

MICROPHONE

(CONDENSER

OR OTHER)

ANALOG MIXER

DIGITAL LINE

OUTPUT

(XLR)

AES or EBU.

COMPUTER

ETHERNET

SWITCH

INTERNET

MODEM

STANDARD

CAT5

ETHERNET

CABLES

(RJ-45)

TO AC

POWER

SOURCE

STANDARD CAT5 ETHERNET CABLE (RJ-45)

LAPTOP (OR DESKTOP)

COMPUTER

SUPPLIED

ANTENNA

EITHER

BUT

NOT

BOTH

Connecting the T45 to other Devices

The Analog LINE/MIC Input jack can be used with standard pro audio electronics such as standard pro audio line level,

condenser microphones up to 15v or an analog line output from a mixer. The combination jack accepts either XLR or 1/4” (TRS).

This source must be congured in the menu before plugging the source into the jack.

The RCA Audio Line Output jack can be used for monitoring, recording, or routing processed audio to another sound system.

The XLR Digital Line Input can be used with the output of a digital mixer or digital audio source. The processors inside the T45

convert the digital bitstream into usable audio.

The RCA S/PDIF Digital Line Input jack can be used with a device that has an RCA Digital Audio Out (also referred to as “Coaxial

Digital Audio” from consumer electronic devices. The processors inside the T45 convert the digital bitstream into usable audio.

The Remote Antenna Connection can be used to connect a remote antenna to the T45 when the whip antenna won’t be used

(as in the case of rack-mounting). See the Williams Sound Antenna Guide for a full range of antenna and mounting options (see

Figure 5).

The Ethernet Jack (PPA T45NET only) can be used to connect the T45NET to either (1) a local network or (2) directly to a single

computer. Both options can use either a standard Ethernet cable or a crossover cable. A crossover cable can be used, but is not

required to connect the T45 directly to a computer, because an internal MUX senses the device that is connected and crosses the

pins automatically.

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